Web browser compatibility

CSS animations are supported in the latest version of all major browsers, and browsers with animation support make up almost 90% of all usage. If you need to support IE9 and below, however, this section is for you.

Implementing a fallback spinner

How do you know if you need to provide a fallback? You can easily check for animation support with Modernizr, or manually check for the animation property, and replace the spinner with a GIF if it's not supported: